Gemming machine



NOW. 25

F. E. VALOIS GEMMING MACHINE File M 28. 1920 2 Sheets-Sheep 1 Lima? NOV. 25

F. E. VALOIS GEKMING MACHINE 2 sagas-shin 2 Filed May 28. 1920 INVENTOR FELIX ELVALOIB ATTORNEY Patented Nov. 25, 1924.

FELIX EMILE VALOIS, OF BRIDGEPO'RT, CONNECTICUT, ASSIGNOR T0 HAT/TEL SHOE MACHINERY COMPANY, OF BRIDGEPORT, CONNECTICUT, A. CORPORATION OF MASSACHUSETTS.

GEMMILNG- MACHINE.

Application filed May 28, 1920. Serial No. 384,959.

To all whom it may concern:

Be it known that I, Fr'JLIx E. VALOIS, a citizen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in (lemming Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to machines for reinforcing the so-called gem insole, one feature thereof relating to a drive mechanism for the tamping tool to greatly reduce the noise and vibration of the machine, which has heretofore been the cause of annoyance anl fatigue to the operator.

More specifically this invention provides operative connections between the drive shaft and the tamping tool, comprising eccentric, lever, and link elements, thus eliminating the use of cams which are noisy and wear rapidly. These connections have been so designed as to impart a rapid action to the tool without necessitating an extremely high speed for the drive shaft, though it may be higher than possible with cams.

A further feature of this invention relates to the mounting of the plow, by which it is allowed to yield for increasing thicknesses of work, as when the unchanneled portion of the insole is reached, thus avoiding strains tending to cause breakage.

For a more complete understanding of this invention reference may be had to the accompanying drawings in which Fig. 1, is an elevation partly in section, and with parts removed of a gemming machine constructed according to this invention.

Fig. 2, is a detail partly in section of a portion of the tamper actuating mechanism.

Fig. 3, is a view of the plow mounting, partly in section on line 33 of Fig. 5.

Fig. 4, is an enlarged sectional view on line 44 of Fig. 5, and,

Fig. 5, is a detail of the plow mounting.

Referring to Fig. 1, A represents a machine pedestal supporting at the upper end thereof a machine head B which carries a post C formed at its upper end with a horizontal extension D terminating in a downwardly projecting portion E, which in turn merges with a bracket portion F fixed to or integral with the top portion of the head B.

Journaled in bearings in the upper portion of the parts G and E, is a driving shaft 1, carrying outside the portion G the tight and loose pulleys 3 and 4, and the handwheel 5. Between the portions C and E, shaft 1 carries a worm 6 arranged by suitable connections to rotate a work-table to be later described, these connections being omitted from the drawing as they constitute no part of the present invention.

Outside of the member E shaft 1 carries an eccentric for actuating an arm 7 this arm being retained in position by a collar 8 made fast to the end of the shaft 1. Arm 7 serves to actuate mechanism not material to this invention, and therefore will not be further described.

Extending between the head B and the top frame member D, is a vertical rod 9 which forms a guideway for a slidable collar 10 surrounding rod 9. Pivotally connected by pin 11 to the collar 10 is the outer end of the eccentric strap 12, deriving motion from an eccentric fast to the shaft 1, and being held in position thereon by means of a fixed collar 13. Slide 10 is provided with an extension 14 at its upper end, which is pivotally connected at 15 to the intermediate portion of an arm or lever 16 pivoted at 17 to the portion C of the frame. The free end of arm 16 is pivotally connected to an extensible link 18, this link as shown in Fig. 2, comprising a sleeve 19, and a rod 20 slidable therein, rod 20 being reduced in diameter at one end to form with the sleeve 19 a hollow chamber 21 for the reception of a coil spring 22, bearing at one end against the larger portion of the rod 20 and at its other end against the base of the sleeve 19 to normally project the rod 20 outwardly. A nut 23 threaded on the reduced extremity of the rod 20 and bearing on a washer 23', limits the extent to which the rod 20' may be projected. The outer end of rod 20 carries the pivotal connection 24, being formed for that purpose with a pair of spaced ears engaging both sides of the arm 16. Sleeve 19 is provided with an ear 25, by which it is pivotally connected at 25 between spaced jaws of an arm 26 of a bell-crank lever pivoted at 28 to the portion F of the frame, the other arm of this lever being shown at 27. At its outer end arm 27 carries a tool holder 29, upon which is adjustably mounted a tamping tool 30. Arm 27 is also provided with a vertical slot 31, for the adjustable attachment thereto of other mechanism not herein shown, as it forms no part of the present invention.

At 32 and 33 are shown trimming cutters carried by horizontal shafts 34 and 35, which are shown as actuated by a pulley 36, this mechanism being of any suitable or usual form and hence not further described herein.

Extending forwardly from the head B is a bracket arm G terminating in spaced ears 40 and 41 for the slidable reception of a shaft 42. Betweenthe ears 40 and 41 a collar 43 isadjustably fixed to the shaft 42-and a coil spring 44 bearing between collar 43 and ear 41, serves normally to project shaft 42 upwardly. Above the car 40 a collar 45 is also made fast to shaft- 42 to limit the downward movement of the shaft. A work table 46 is revolubly carried at the upper end of the shaft 42 hearing on collar 45 and may be rotated. by means of a beveled gear 47 slidably keyed thereto and meshing with a similar gear 48 on a horizontal shaft 49, this shaft being driven by suitable connections not herein shown, preferably by the worm 6 on shaft 1, above noted. Gear 47 is retained in mesh with gear 48 by means of a fixed retainer 47. At the lower end of shaft 42 is fixed a rod 49 connected preferably to a treadle mechanism, by which the table 46 may be depressed.

Adjustably fixed to a vertical face of the head B, is a plate 50 shown detached in Fig. 5, the adjustment being effected by a bolt 51, passing through a slot 52 in th plate 50.

At one side of the slot 52, plate 50 is cut away forming a narrow jaw 53 and a wide jaw 53 spaced therefrom, between which jaws a plate 54 is hinged by means of a pm 55 fixed in the aws. One corner of the plate 54 is cut away, as shownat 54, and the head of a set screw 56 fixed in the plate 50 projects over the cut-away portion. This con struction allows a limited outward swinging movement of the plate 54 relative to the plate 50, the head of the screw '56 forming a limitv stop engaging the cut-away portion 54.

A pin 57, provided with a reduced threaded extremity 58,v engages a mating threaded opening in the plate 54. A vertically disposed sleeve member 59 has a lug 60 projecting laterally thereof, this lug being perforated for the reception of the pin 57, a set screw 61 being used to retain the sleeve in position thereon.

Slidably mounted within the sleeve 59 is a plunger 62, carrying at its upper end'a plow 68 adapted to ride on the feather of an insole supported on the table 46 and bearing against the outside of the insole rib beneath the reinforcing material. Plunger 62 is prevented from rotation within the sleeve 59, but allowed a limited axial movement thereof, by a bolt 64 threaded therein riding in a slot 65 in the upper portion of member 59. Plunger 62 has a downwardly proecting portion 66 of reduced diameter which passes through a perforation in the base of the member 59, and; at the lower end of the portion 66 is the upper extremity of a rod 68 formed with spaced ears between which the portion 66 is pivoted. A coil spring 69 surrounding the portion 66 bears between the base of the sleeve 59 and the plunger 62, and normally projects the same upwardly with the upper end of rod 68 in contact with the base of the sleeve 59. Rod 68 projects downwardly, and fixed at the lower end thereof is a collar 70.

An arm 71, fixed to the lower end of shaft 42, bearsbetweenthe bracket G and the up per surface of collar 70, a slight space being left between the arm 71 and the collar to allow the sleeve 59 to be rocked upwardly about the pivot pin 55 without causing the upper end of rod 68 to retract from contact with sleeve 59.

The operation of this mechanism is as follows:

Rotation of the shaft 1 acting through the eccentric and strap 12 reciprocates the slide 10 on the guide-rod 9, which, acting through the extension 14 rocks the arm 16, thereby imparting through the extensible link 18 rocking motion to the arm 26 of the bellcrank lever.

From inspection of Fig. 2, it will be seen that the pivot point 24 between the arm 16 and the link 18 passes on both sides of the line connecting the pivot points 17 and 25. It will be noted that motion; from its extreme position in either direction of the arm 16 to the position in alignment with the pivots 17 and 25 rocks the arm 26 away from the guide-rod 9, and the continued rocking of the arm 16 to its opposite. eX- treme position rocks the arm 26 toward the guide-rod 9, thus causing a complete vibration of the arm- 2-6, for each swing in either direction of the arm 16, or two complete cycles of vibration of the arm 26 for each complete vibration cycle of the arm 16. As the tamping tool 30 is carried by the other arm'27 of the bell-crank lever, it will receive two complete tamping strokes for each complete actuation of the arm 16, caused by a single revolution of the shaft 1. It should also be noted that the yielding construction of the link 18 will serve to cushion the blow imparted to the tamping tool. This driving construction makes possible a quiet running machine having a rapid actuation of the tamping tool without excessive speed of the drive shaft.

During the operation of the machine the work-table 46 is rotated as above noted, the plow 63 riding along themargin of the insole against the outer, face of the insole lip and beneath the reinforcing material. When the end of the channel portion of the sole has been reached, or any obstruction tending to raise the plow upwardly from the work-table, the pivotal connection of the plate 54: allows the sleeve 59 carrying the plow to rock upwardly until the out away portion 54 contacts with the head of the set screw 56. When the obstruction is passed, the weight of the parts returns the plow to its former position, the mounting of the plow constituting in effect a bracket having a side face normally contacting its support and pivoted at the upper end thereto, the parts being held in normal position by gravity. Due to the space between the arm 71 and the collar 70, this action is permitted without disturbing the relationship of the plow within the bracket. When it is desired to insert work into the machine by depression of the treadle, rod 49 may be pulled downwardly, thus lowering the work-table 46, and through the impingement of the bracket 71 on the collar 70, also lowerin the plow 63 within its bracket mounting.

aving thus described one embodiment of this invention, though it should be evident that many changes might be made therein without departing from its spirit and scope what is claimed is.

1. In a machine of the class described, a work-table, a plow disposed to ride on the feather of an insole being operated upon and against the lip thereof, yielding means for positioning said plow in definite spaced relation with respect to said work-table and permitting movement of the plow for insertion and removal of said insole, and a gravity returned device ermitting move ment of said plow for di erent thicknesses of work beyond the position determined by said yielding means.

2. In a machine of the class described, a support, a bracket extending outwardly therefrom and having a face normally in contact therewith, a pivotal connection between said bracket and support at the upper extremity of said face, a plow carried at the outer end of said bracket in position to ride on the upper surface of an insole being operated upon, and a stop for limiting the pivotal movement of said bracket in a direction to raise said plow from contact with said insole.

3. In a machine of the class described, a depressable work-table, a bracket, a plow carried by said bracket and arranged to ride on the surface of work supported by said table, connections from said table to said plow to depress said plow relative to said bracket on the depression of said table, and means permitting an upward yielding of said bracket with said plow relative to said table.

4c. In a machine of the class described, the combination with a Work-table and a tamping tool, of a plow disposed to ride on the surface of work supported by said table, a bracket sustaining said plow, supporting means for said bracket permitting movement thereof with said plow for different thick nesses of work during the tamping operation, yielding means permitting movement of said plow for insertion and removal of said work, and a stop for limiting the effective action of said yielding means upon said plow.

5. In a machine of the class described, the combination with. a work-table and a tamping tool, of a plow disposed to ride on the surface of work supported by said table, a bracket sustaining said plow, supporting means for said bracket permitting movement thereof with said plow for different thicknesses of work, means for limiting the movement of said bracket, and yielding means permitting movement of said plow for insertion and removal of said work.

In testimony whereof, I have signed my name to this specification.

FELIX EMILE vALors. 

